import { reqCartList, reqDeleteCartById, reqUpdateCheckedById } from "@/api"
import { Promise } from "core-js"
const state = {
    cartList: []
}
const mutations = {
    GETCARTLIST(state, cartList) {
        state.cartList = cartList
    }
}
const actions = {
    //获取购物车列表数据
    async getCartList({ commit }) {
        let result = await reqCartList()
            // console.log(result);
        if (result.code == 200) {
            commit('GETCARTLIST', result.data)
        }
    },
    //删除购物车某一个产品
    async deleteCartListBySkuId({ commit }, skuId) {
        let result = await reqDeleteCartById(skuId)
        console.log(result);
        if (result.code == 200) {
            return 'ok'
        } else {
            return Promise.reject(new Error('faile'))
        }
    },
    //修改购物车某一个产品的选中状态
    async updateCheckedById({ commit }, { skuId, isChecked }) {
        let result = await reqUpdateCheckedById(skuId, isChecked)
        if (result.code == 200) {
            return 'ok'
        } else {
            return Promise.reject(new Error('faile'))
        }
    },
    //删除全部勾选的产品
    deleteAllCheckedCart({ dispatch, getters }) {
        // console.log(context);
        //context：其实就是一个小仓库：commit[提交mutations修改state]  getters[计算属性]dispatch[派发action]state[当前仓库中的数据]
        //获取购物车中全部产品，是一个数组
        let PromiseAll = []
        getters.cartList.cartInfoList.forEach(item => {
                let promise = item.isChecked == 1 ? dispatch('deleteCartListBySkuId', item.skuId) : '' //此处真，返回的是promise对象
                PromiseAll.push(promise)
            })
            //只要全部的p1|p2|p3.。。都成功，返回结果即为成功
            //如果有一个失败，返回的就是失败结果
        return Promise.all(PromiseAll)
    },
    //修改全部产品状态
    updateAllCartIsChecked({ dispatch, state }, isChecked) {
        let promiseAll = []
        state.cartList[0].cartInfoList.forEach(item => {
                let promise = dispatch('updateCheckedById', { skuId: item.skuId, isChecked })
                promiseAll.push(promise)
            })
            //最终返回结果
        return Promise.all(promiseAll)

    }
}
const getters = {
    cartList(state) {
        return state.cartList[0] || {}
    },
    // 计算出来的购物数据

}
export default {
    state,
    mutations,
    actions,
    getters,

}